/Engine/Plugins/Importers/USDImporter/Source/USDExporter/Public/USDConversionBlueprintContext.h
Gets the file path of the root layer of our current stage
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Export context") [FFilePath](API\Runtime\CoreUObject\UObject\FFilePath) GetStageRootLayer()